Sartorius
The Sartorius is a two joint muscle and so is weak when the knee is flexed and the hip is flexed at the same time. It works better during single movements.
Origin
- Area between the ASIS (Anterior Superior Iliac Spine) and AIIS (Anterior Inferior Iliac Spine).
Insertion
- Anterior part of the medial condyle of the tibia.
Actions
- Flexion of the hip.
- Flexion of the knee.
- External rotation of the hip as it flexes the hip and knee.
- Abducts the hip.
Innervation
- Femoral nerve.
Daily uses
- Sitting in a cross-legged position.
Example strengthening exercises
- Standing hip flexion using resistance band.
- Sitting hip flexion using resistance band.
Example stretches
- Hip flexor stretch.
- Laying quadricep stretch.
- Standing quadricep stretch.
Related muscles
- Rectus femoris.
- Gracilis.
